Afterward, open the door and let it air-dry. Routine attention should be paid to the rubber seals around the washer door, which can collect mould and mildew.
Duplicate soil samples (2.00g) (for wet soils the amount corresponded to 2.00 g air-dry weight) were equilibrated with 40 mL [KH.sub.2][PO.sub.4] solutions containing different concentrations of P (0-27 mg/L), 0.01 mol/L of Ca[Cl.sub.2], and 0.25% (v/v) toluene (microbial inhibitor) on a reciprocal shaker at speed of 150 cycles/min for 24 h at 25 [degrees] C.